Replaces http.DefaultClient in MCP bridge (mcp_tools.go) and CP config
fetch (cp_config.go) with dedicated clients that have transport-level
timeouts. Eliminates a fragility class where global mutable client +
missing context timeout could hang forever on dead workspaces or slow CP.
- mcpHTTPClient: 5s dial, 30s response header, 5s TLS handshake
- cp_config fetch: 10s client timeout matching context deadline
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Molecule AI Dev Engineer A (Kimi)
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